keller



J. F. KELLER.

Grain-Drill.

Patented Jan. 29, 1867.

. mesovsusnr IN SEED .PLANTEBS.

digs. grlgehule reform in iuflgese Ztettcrs fitted amt mating gurt'uffig: time.

I i V r0 ALL WHGM. IT MAY CONCERN:

Be it known that I, JOHN F. KELLER, of Green castle, in the co unty ofFranklin, and State of Pennsylvania,

have invented a new and useful Improvement in Wheat Drills; andl dohereby declare that the following is a full and-exact description of thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon.

My invention consists in a new arrangement of the spring and lever foroperating the iie'rible boot and I plough of a seed planter, andespecially in placing the fulcrum of such lever between the boot andthespring,

thus modifying the action of the lever as heretofore used. In theaccompanying drawings- Fig'ure 1 is a longitudinal section of a wheatdrill with my'improvements attached. Figure 2 is a'detached view of thelever, boot, and spring, with their connections, showing also themovements as the boot ,is extended.

The general construction of my machine may beiof the usual form, withthe: boot attached to the frameO by means of the drag-bar E, as seen infig. of the accompanying drawings. 7 The check link G is also used as inmy patent of September 26, 1865, The lever E, fig. 1, is pivoted atf,and also to the link G. Upon the;

forward end of this lever is a vibrating cap'or seat, I, for holdingtheirubber spring L, fig. 1. The upper end of this spring is held byanother cap, S, which is slipped "loosely upon a stud or short pin castsolid with the staple K, or upon a guide-pin hereafter described. Uponthis stud may be put one or more washers, W, when necessary to increasethe tension of the spring; or a-th'umb screw, may be arranged, as seenin fig. where the spring L is placed upon the guide-pinP, which is castsolid with the spring-seat This li llllllllbSGlGW T bears upon the topof the washer S, and thus compresses the spring more or less, increasingits tension at leasure. The thumb-screw works i-na'female screw-cut inthe staple K, and the thumb-screw, washer S, and spring L, all may slidefreely upon the guide-pin P.- 7 Instead of the above arrangement otherequivaient'means may be employed to give tension to the spring. Two ormore set-screwsmay be inserted in the staple around the guide-pin P, orother means for the same purpose. The action of the spring Lholds thelever F and link G steady, and also under slight strain, ready to resistthe greater strain of the/boot and shovel, and thus prevents the shakingmotion to which the common arrangement of lever is liable.

Claims.

1. In the arrangement of a flexible bootor shovel-plough with a leverand spring, I 'claim placing the fulcrum of the lever between the,bootand the spring, substantially in the manner, and for the puiiposes setforth.

2. 'I claimthe vibrating seat I, for supporting the spring incombination with the lever,s ubstantially as set forth. I p i 3. I alsoclaim the use of the washer W, or its equivalent, in combination withthe-cap S, and spring L, substantially as described. 7 I

4:. I claim the above-described arrangement of the thumb-screw handguide-pin P, for compressing the spring, and thus increasing the tensionof the same, substantially as specified.

JOHN F, KELLER.

Witnesses DANIEL BREED,

Emu. F. Brown.

